v3.26.1
Related Parties - Summary of Related Parties and Nature of Relationship (Detail)
 12 Months Ended
Dec. 31, 2025
Xiaopeng He [Member]  
Related Party Transaction [Line Items]  
Relationship with the company Principal Shareholder of the Company, Chairman of the Board and Chief Executive Officer
Hongdi Brian Gu [Member]  
Related Party Transaction [Line Items]  
Relationship with the company Honorary Vice Chairman of the Board and President
Tao He [Member]  
Related Party Transaction [Line Items]  
Relationship with the company Former Senior Vice President
HT Flying Car Inc. [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Significantly Influenced by the Principal Shareholder
HT Flying Car (Hong Kong) Limited [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Significantly Influenced by the Principal Shareholder
Guangzhou Huitian Aerospace Technology Co., Ltd. (Guangzhou Huitian) [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Significantly Influenced by the Principal Shareholder
Guangdong Huitian Aerospace Technology Co., Ltd. (Guangdong Huitian) [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Partnership Significantly Influenced by the Company
Guangzhou Huitian Flying Car Manufacturing Co., Ltd. [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Significantly Influenced by the Principal Shareholder
Guangzhou Huitian Manufacturing Co., Ltd. [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Significantly Influenced by the Principal Shareholder
Foshan Huitian Aviation Technology Co., Ltd. [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Significantly Influenced by the Principal Shareholder
Rockets Capital L.P [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Partnership Significantly Influenced by the Company
Guangzhou Xuetao [Member]  
Related Party Transaction [Line Items]  
Relationship with the company A Company Controlled by the Company Secretary